11
CPU MODULE PROCESSING TIME
11.1 Scan Time
11.1.2 Time required for each processing included in scan time
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(a) Overhead time at execution of interrupt program/fixed scan execution type
program
The interrupt program/fixed scan execution type program includes overhead time.
Also, the interrupt program includes pre-start overhead time and program-end
overhead time.
When calculating the instruction execution time, add the following overhead time
to the above instruction execution time.
* 1 : Indicates the value when the QI60 is mounted on slot 0 of the main base unit.
* 2 : The QI60 cannot be used when connecting to the extension base unit. The values in table show
the overhead time of processing interrupted from the intelligent function module.
Note3
Table11.3 Pre-start overhead time of interrupt program (B1)
CPU module
Fixed scan interrupt (I28 to 31)
processing
Multiple CPU synchronous
interrupt (I45)
Interrupt processing from
QI60 (I0 to 15)
*1
/interrupt from
the intelligent function module
(I50 to 127)
Without high-
speed start
With high-
speed start
Without high-
speed start
With high-
speed start
Without high-
speed start
With high-
speed start
Q00JCPU
175 s
150 s
----
----
350 s
325 s
Q00CPU
145 s
125 s
----
----
285 s
265 s
Q01CPU
135 s
120 s
----
----
270 s
255 s
Q02CPU
190 s
85 s
----
----
205 s
100 s
Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU,
Q02PHCPU, Q06PHCPU,
Q12PHCPU, Q25PHCPU
85 s
40 s
----
----
90 s
45 s
Q12PRHCPU, Q25PRHCPU
(When extension base unit is
unconnected)
85 s
40 s
----
----
90 s
45 s
Q12PRHCPU, Q25PRHCPU
(When extension base unit is
connected)
85 s
40 s
----
----
1090 s
*2
1045 s
*2
Q02UCPU
50 s
19 s
----
----
60 s
31 s
Q03UDCPU, Q03UDECPU
47 s
17 s
46 s
16 s
54 s
22 s
Q04UDHCPU, Q06UDHCPU,
Q13UDHCPU, Q26UDHCPU,
Q04UDEHCPU, Q06UDEHCPU,
Q13UDEHCPU, Q26UDEHCPU
46 s
16 s
44 s
14 s
52 s
22 s
Basic
Note11.3
Since the Basic model QCPU cannot use fixed scan execution type programs, it is not necessary
to be conscious of the overhead time of the fixed scan execution type program.
Basic